M=x1-x2/2

Solution for M=x1-x2/2 equation:

=M1-M2/2

We move all terms to the left:

-(M1-M2/2)=0

We add all the numbers together, and all the variables

-(+M-M2/2)=0

We get rid of parentheses

-M+M2/2=0

We multiply all the terms by the denominator


-M*2+M2=0

We add all the numbers together, and all the variables

M^2-M*2=0

Wy multiply elements

M^2-2M=0

a = 1; b = -2; c = 0;
Δ = b2-4ac
Δ = -22-4·1·0
Δ = 4
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$M_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$M_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4}=2$
$M_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-2}{2*1}=\frac{0}{2}
=0
$
$M_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+2}{2*1}=\frac{4}{2}
=2
$